#2. Bray Wyatt

This seems like a ludicrous idea, but it's highly possible that WWE could pull a Mick Foley on the WWE Universe. Back in 1998, Mick Foley appeared as Mankind, Cactus Jack, and Dude Love in the same Royal Rumble Match. It was a ridiculous booking, but the audience ate it up.
In similar fashion, Bray Wyatt could enter the Royal Rumble while The Fiend defends the WWE Universal Championship against Daniel Bryan. It may seem like out of the box thinking, but WWE has done it before. To quote Battlestar Galactica, 'What has happened before will happen again.'
The Fiend and Brock Lesnar almost happened at WWE Survivor Series 2019, but the match was canceled. Triple H revealed why the match was cancelled and said:
Triple H says Adam Cole Vs The Fiend Vs Brock Lesnar was considered, but WWE felt the story with Lesnar and Rey Mysterio was 'so strong' they felt they had to go with that.
With the arrival of The Fiend, WWE has one of their strongest characters that has gotten over with the audience. Could there be a unification match at WrestleMania 36? Never say never in WWE.
Becky Lynch has been challenged HERE.